content: /* ===========================================================
   * JFreeChart : a free chart library for the Java(tm) platform
   * ===========================================================
   *
   * (C) Copyright 2000-2014, by Object Refinery Limited and Contributors.
   *
   * Project Info:  http://www.jfree.org/jfreechart/index.html
   *
   * This library is free software; you can redistribute it and/or modify it
   * under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation; either version 2.1 of the License, or
   * (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
   * License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
   * USA.
   *
   * [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
   * Other names may be trademarks of their respective owners.]
   *
   * -----------------
   * PiePlotTests.java
   * -----------------
   * (C) Copyright 2003-2014, by Object Refinery Limited and Contributors.
   *
   * Original Author:  David Gilbert (for Object Refinery Limited);
   * Contributor(s):   -;
   *
   * Changes
   * -------
   * 18-Mar-2003 : Version 1 (DG);
   * 10-May-2005 : Strengthened equals() test (DG);
   * 27-Sep-2006 : Added tests for the getBaseSectionPaint() method (DG);
   * 23-Nov-2006 : Additional equals() and clone() tests (DG);
   * 17-Apr-2007 : Added check for label generator that returns a null label (DG);
   * 31-Mar-2008 : Updated testEquals() (DG);
   * 10-Jul-2009 : Updated testEquals() (DG);
   * 10-Mar-2014 : Removed LegendItemCollection (DG);
   *
   */
  
  package org.jfree.chart.plot;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertNotSame;
  import static org.junit.jupiter.api.Assertions.assertSame;
  import static org.junit.jupiter.api.Assertions.fail;
  
  import java.awt.BasicStroke;
  import java.awt.Color;
  import java.awt.Font;
  import java.awt.GradientPaint;
  import java.awt.Graphics2D;
  import java.awt.Rectangle;
  import java.awt.Stroke;
  import java.awt.geom.Rectangle2D;
  import java.awt.image.BufferedImage;
  import java.io.ByteArrayInputStream;
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  import java.io.ObjectInput;
  import java.io.ObjectInputStream;
  import java.io.ObjectOutput;
  import java.io.ObjectOutputStream;
  import java.text.AttributedString;
  import java.util.List;
  import org.jfree.chart.ChartFactory;
  import org.jfree.chart.JFreeChart;
  import org.jfree.chart.LegendItem;
  import org.jfree.chart.labels.PieSectionLabelGenerator;
  import org.jfree.chart.labels.StandardPieSectionLabelGenerator;
  import org.jfree.chart.labels.StandardPieToolTipGenerator;
  import org.jfree.chart.urls.CustomPieURLGenerator;
  import org.jfree.chart.urls.StandardPieURLGenerator;
  import org.jfree.chart.util.DefaultShadowGenerator;
  import org.jfree.chart.util.Rotation;
  import org.jfree.data.general.DefaultPieDataset;
  import org.jfree.data.general.PieDataset;
  import org.junit.jupiter.api.Test;
  
  ;
  
  /**
   * Some tests for the {@link PiePlot} class.
   */
  public class PiePlotTest  {
  
  
  
  
  
      /**
       * Test the equals() method.
       */
      @Test
      public void testEquals() {
  
          PiePlot plot1 = new PiePlot();
          PiePlot plot2 = new PiePlot();
          assertEquals(plot1, plot2);
          assertEquals(plot2, plot1);
  
          // pieIndex...
          plot1.setPieIndex(99);
          assertFalse(plot1.equals(plot2));
          plot2.setPieIndex(99);
          assertEquals(plot1, plot2);
  
          // interiorGap...
          plot1.setInteriorGap(0.15);
          assertFalse(plot1.equals(plot2));
          plot2.setInteriorGap(0.15);
          assertEquals(plot1, plot2);
  
          // circular
          plot1.setCircular(!plot1.isCircular());
          assertFalse(plot1.equals(plot2));
          plot2.setCircular(false);
          assertEquals(plot1, plot2);
  
          // startAngle
          plot1.setStartAngle(Math.PI);
          assertFalse(plot1.equals(plot2));
          plot2.setStartAngle(Math.PI);
          assertEquals(plot1, plot2);
  
          // direction
          plot1.setDirection(Rotation.ANTICLOCKWISE);
          assertFalse(plot1.equals(plot2));
          plot2.setDirection(Rotation.ANTICLOCKWISE);
          assertEquals(plot1, plot2);
  
          // ignoreZeroValues
          plot1.setIgnoreZeroValues(true);
          plot2.setIgnoreZeroValues(false);
          assertFalse(plot1.equals(plot2));
          plot2.setIgnoreZeroValues(true);
          assertEquals(plot1, plot2);
  
          // ignoreNullValues
          plot1.setIgnoreNullValues(true);
          plot2.setIgnoreNullValues(false);
          assertFalse(plot1.equals(plot2));
          plot2.setIgnoreNullValues(true);
          assertEquals(plot1, plot2);
  
          // sectionPaintMap
          plot1.setSectionPaint("A", new GradientPaint(1.0f, 2.0f, Color.BLUE,
                  3.0f, 4.0f, Color.WHITE));
          assertFalse(plot1.equals(plot2));
          plot2.setSectionPaint("A", new GradientPaint(1.0f, 2.0f, Color.BLUE,
                  3.0f, 4.0f, Color.WHITE));
          assertEquals(plot1, plot2);
  
          // baseSectionPaint
          plot1.setBaseSectionPaint(new GradientPaint(1.0f, 2.0f, Color.BLACK,
                  3.0f, 4.0f, Color.WHITE));
          assertFalse(plot1.equals(plot2));
          plot2.setBaseSectionPaint(new GradientPaint(1.0f, 2.0f, Color.BLACK,
                  3.0f, 4.0f, Color.WHITE));
          assertEquals(plot1, plot2);
  
          // sectionOutlinesVisible
          plot1.setSectionOutlinesVisible(false);
          assertFalse(plot1.equals(plot2));
          plot2.setSectionOutlinesVisible(false);
          assertEquals(plot1, plot2);
  
          // sectionOutlinePaintList
          plot1.setSectionOutlinePaint("A", new GradientPaint(1.0f, 2.0f,
                  Color.green, 3.0f, 4.0f, Color.WHITE));
          assertFalse(plot1.equals(plot2));
          plot2.setSectionOutlinePaint("A", new GradientPaint(1.0f, 2.0f,
                  Color.green, 3.0f, 4.0f, Color.WHITE));
          assertEquals(plot1, plot2);
  
          // baseSectionOutlinePaint
          plot1.setBaseSectionOutlinePaint(new GradientPaint(1.0f, 2.0f,
                  Color.gray, 3.0f, 4.0f, Color.WHITE));
          assertFalse(plot1.equals(plot2));
          plot2.setBaseSectionOutlinePaint(new GradientPaint(1.0f, 2.0f,
                  Color.gray, 3.0f, 4.0f, Color.WHITE));
          assertEquals(plot1, plot2);
  
          // sectionOutlineStrokeList
          plot1.setSectionOutlineStroke("A", new BasicStroke(1.0f));
          assertFalse(plot1.equals(plot2));
          plot2.setSectionOutlineStroke("A", new BasicStroke(1.0f));
          assertEquals(plot1, plot2);
  
          // baseSectionOutlineStroke
          plot1.setBaseSectionOutlineStroke(new BasicStroke(1.0f));
          assertFalse(plot1.equals(plot2));
          plot2.setBaseSectionOutlineStroke(new BasicStroke(1.0f));
          assertEquals(plot1, plot2);
  
          // shadowPaint
          plot1.setShadowPaint(new GradientPaint(1.0f, 2.0f, Color.orange,
                  3.0f, 4.0f, Color.WHITE));
          assertFalse(plot1.equals(plot2));
          plot2.setShadowPaint(new GradientPaint(1.0f, 2.0f, Color.orange,
                  3.0f, 4.0f, Color.WHITE));
          assertEquals(plot1, plot2);
  
          // shadowXOffset
          plot1.setShadowXOffset(4.4);
          assertFalse(plot1.equals(plot2));
          plot2.setShadowXOffset(4.4);
          assertEquals(plot1, plot2);
  
          // shadowYOffset
          plot1.setShadowYOffset(4.4);
          assertFalse(plot1.equals(plot2));
          plot2.setShadowYOffset(4.4);
          assertEquals(plot1, plot2);
  
          // labelFont
          plot1.setLabelFont(new Font("Serif", Font.PLAIN, 18));
          assertFalse(plot1.equals(plot2));
          plot2.setLabelFont(new Font("Serif", Font.PLAIN, 18));
          assertEquals(plot1, plot2);
  
          // labelPaint
          plot1.setLabelPaint(new GradientPaint(1.0f, 2.0f, Color.darkGray,
                  3.0f, 4.0f, Color.WHITE));
          assertFalse(plot1.equals(plot2));
          plot2.setLabelPaint(new GradientPaint(1.0f, 2.0f, Color.darkGray,
                  3.0f, 4.0f, Color.WHITE));
          assertEquals(plot1, plot2);
  
          // labelBackgroundPaint
          plot1.setLabelBackgroundPaint(new GradientPaint(1.0f, 2.0f, Color.RED,
                  3.0f, 4.0f, Color.WHITE));
          assertFalse(plot1.equals(plot2));
          plot2.setLabelBackgroundPaint(new GradientPaint(1.0f, 2.0f, Color.RED,
                  3.0f, 4.0f, Color.WHITE));
          assertEquals(plot1, plot2);
  
          // labelOutlinePaint
          plot1.setLabelOutlinePaint(new GradientPaint(1.0f, 2.0f, Color.BLUE,
                  3.0f, 4.0f, Color.WHITE));
          assertFalse(plot1.equals(plot2));
          plot2.setLabelOutlinePaint(new GradientPaint(1.0f, 2.0f, Color.BLUE,
                  3.0f, 4.0f, Color.WHITE));
          assertEquals(plot1, plot2);
  
          // labelOutlineStroke
          Stroke s = new BasicStroke(1.1f);
          plot1.setLabelOutlineStroke(s);
          assertFalse(plot1.equals(plot2));
          plot2.setLabelOutlineStroke(s);
          assertEquals(plot1, plot2);
  
          // labelShadowPaint
          plot1.setLabelShadowPaint(new GradientPaint(1.0f, 2.0f, Color.yellow,
                  3.0f, 4.0f, Color.WHITE));
          assertFalse(plot1.equals(plot2));
          plot2.setLabelShadowPaint(new GradientPaint(1.0f, 2.0f, Color.yellow,
                  3.0f, 4.0f, Color.WHITE));
          assertEquals(plot1, plot2);
  
          // explodePercentages
          plot1.setExplodePercent("A", 0.33);
          assertFalse(plot1.equals(plot2));
          plot2.setExplodePercent("A", 0.33);
          assertEquals(plot1, plot2);
  
          // labelGenerator
          plot1.setLabelGenerator(new StandardPieSectionLabelGenerator(
                  "{2}{1}{0}"));
          assertFalse(plot1.equals(plot2));
          plot2.setLabelGenerator(new StandardPieSectionLabelGenerator(
                  "{2}{1}{0}"));
          assertEquals(plot1, plot2);
  
          // labelFont
          Font f = new Font("SansSerif", Font.PLAIN, 20);
          plot1.setLabelFont(f);
          assertFalse(plot1.equals(plot2));
          plot2.setLabelFont(f);
          assertEquals(plot1, plot2);
  
          // labelPaint
          plot1.setLabelPaint(new GradientPaint(1.0f, 2.0f, Color.magenta,
                  3.0f, 4.0f, Color.WHITE));
          assertFalse(plot1.equals(plot2));
          plot2.setLabelPaint(new GradientPaint(1.0f, 2.0f, Color.magenta,
                  3.0f, 4.0f, Color.WHITE));
          assertEquals(plot1, plot2);
  
          // maximumLabelWidth
          plot1.setMaximumLabelWidth(0.33);
          assertFalse(plot1.equals(plot2));
          plot2.setMaximumLabelWidth(0.33);
          assertEquals(plot1, plot2);
  
          // labelGap
          plot1.setLabelGap(0.11);
          assertFalse(plot1.equals(plot2));
          plot2.setLabelGap(0.11);
          assertEquals(plot1, plot2);
  
          // links visible
          plot1.setLabelLinksVisible(false);
          assertFalse(plot1.equals(plot2));
          plot2.setLabelLinksVisible(false);
          assertEquals(plot1, plot2);
  
          plot1.setLabelLinkStyle(PieLabelLinkStyle.QUAD_CURVE);
          assertFalse(plot1.equals(plot2));
          plot2.setLabelLinkStyle(PieLabelLinkStyle.QUAD_CURVE);
          assertEquals(plot1, plot2);
  
          // linkMargin
          plot1.setLabelLinkMargin(0.11);
          assertFalse(plot1.equals(plot2));
          plot2.setLabelLinkMargin(0.11);
          assertEquals(plot1, plot2);
  
          // labelLinkPaint
          plot1.setLabelLinkPaint(new GradientPaint(1.0f, 2.0f, Color.magenta,
                  3.0f, 4.0f, Color.WHITE));
          assertFalse(plot1.equals(plot2));
          plot2.setLabelLinkPaint(new GradientPaint(1.0f, 2.0f, Color.magenta,
                  3.0f, 4.0f, Color.WHITE));
          assertEquals(plot1, plot2);
  
          // labelLinkStroke
          plot1.setLabelLinkStroke(new BasicStroke(1.0f));
          assertFalse(plot1.equals(plot2));
          plot2.setLabelLinkStroke(new BasicStroke(1.0f));
          assertEquals(plot1, plot2);
  
          // toolTipGenerator
          plot1.setToolTipGenerator(
              new StandardPieToolTipGenerator("{2}{1}{0}")
          );
          assertFalse(plot1.equals(plot2));
          plot2.setToolTipGenerator(
              new StandardPieToolTipGenerator("{2}{1}{0}")
          );
          assertEquals(plot1, plot2);
  
          // urlGenerator
          plot1.setURLGenerator(new StandardPieURLGenerator("xx"));
          assertFalse(plot1.equals(plot2));
          plot2.setURLGenerator(new StandardPieURLGenerator("xx"));
          assertEquals(plot1, plot2);
  
          // minimumArcAngleToDraw
          plot1.setMinimumArcAngleToDraw(1.0);
          assertFalse(plot1.equals(plot2));
          plot2.setMinimumArcAngleToDraw(1.0);
          assertEquals(plot1, plot2);
  
          // legendItemShape
          plot1.setLegendItemShape(new Rectangle2D.Double(1.0, 2.0, 3.0, 4.0));
          assertFalse(plot1.equals(plot2));
          plot2.setLegendItemShape(new Rectangle2D.Double(1.0, 2.0, 3.0, 4.0));
          assertEquals(plot1, plot2);
  
          // legendLabelGenerator
          plot1.setLegendLabelGenerator(new StandardPieSectionLabelGenerator(
                  "{0} --> {1}"));
          assertFalse(plot1.equals(plot2));
          plot2.setLegendLabelGenerator(new StandardPieSectionLabelGenerator(
                  "{0} --> {1}"));
          assertEquals(plot1, plot2);
  
          // legendLabelToolTipGenerator
          plot1.setLegendLabelToolTipGenerator(
                  new StandardPieSectionLabelGenerator("{0} is {1}"));
          assertFalse(plot1.equals(plot2));
          plot2.setLegendLabelToolTipGenerator(
                  new StandardPieSectionLabelGenerator("{0} is {1}"));
          assertEquals(plot1, plot2);
  
          // legendLabelURLGenerator
          plot1.setLegendLabelURLGenerator(new StandardPieURLGenerator(
                  "index.html"));
          assertFalse(plot1.equals(plot2));
          plot2.setLegendLabelURLGenerator(new StandardPieURLGenerator(
                  "index.html"));
          assertEquals(plot1, plot2);
  
          // autoPopulateSectionPaint
          plot1.setAutoPopulateSectionPaint(false);
          assertFalse(plot1.equals(plot2));
          plot2.setAutoPopulateSectionPaint(false);
          assertEquals(plot1, plot2);
  
          // autoPopulateSectionOutlinePaint
          plot1.setAutoPopulateSectionOutlinePaint(true);
          assertFalse(plot1.equals(plot2));
          plot2.setAutoPopulateSectionOutlinePaint(true);
          assertEquals(plot1, plot2);
  
          // autoPopulateSectionOutlineStroke
          plot1.setAutoPopulateSectionOutlineStroke(true);
          assertFalse(plot1.equals(plot2));
          plot2.setAutoPopulateSectionOutlineStroke(true);
          assertEquals(plot1, plot2);
  
          // shadowGenerator
          plot1.setShadowGenerator(new DefaultShadowGenerator(5, Color.gray,
                  0.6f, 4, -Math.PI / 4));
          assertFalse(plot1.equals(plot2));
          plot2.setShadowGenerator(new DefaultShadowGenerator(5, Color.gray,
                  0.6f, 4, -Math.PI / 4));
          assertEquals(plot1, plot2);
  
          plot1.setShadowGenerator(null);
          assertFalse(plot1.equals(plot2));
          plot2.setShadowGenerator(null);
          assertEquals(plot1, plot2);
      }
  
      /**
       * Some basic checks for the clone() method.
       * @throws CloneNotSupportedException 
       */
      @Test
      public void testCloning() throws CloneNotSupportedException {
          PiePlot p1 = new PiePlot();
          PiePlot p2 = (PiePlot) p1.clone();
          assertNotSame(p1, p2);
          assertSame(p1.getClass(), p2.getClass());
          assertEquals(p1, p2);
      }
  
      /**
       * Check cloning of the urlGenerator field.
       * @throws CloneNotSupportedException 
       */
      @Test
      public void testCloning_URLGenerator() throws CloneNotSupportedException {
          CustomPieURLGenerator generator = new CustomPieURLGenerator();
          PiePlot p1 = new PiePlot();
          p1.setURLGenerator(generator);
          PiePlot p2 = (PiePlot) p1.clone();
          assertNotSame(p1, p2);
          assertSame(p1.getClass(), p2.getClass());
          assertEquals(p1, p2);
  
          // check that the URL generator has been cloned
          assertNotSame(p1.getURLGenerator(), p2.getURLGenerator());
      }
  
      /**
       * Check cloning of the legendItemShape field.
       * @throws CloneNotSupportedException 
       */
      @Test
      public void testCloning_LegendItemShape() throws CloneNotSupportedException {
          Rectangle shape = new Rectangle(-4, -4, 8, 8);
          PiePlot p1 = new PiePlot();
          p1.setLegendItemShape(shape);
          PiePlot p2 = (PiePlot) p1.clone();
          assertNotSame(p1, p2);
          assertSame(p1.getClass(), p2.getClass());
          assertEquals(p1, p2);
  
          // change the shape and make sure it only affects p1
          shape.setRect(1.0, 2.0, 3.0, 4.0);
          assertFalse(p1.equals(p2));
      }
  
      /**
       * Check cloning of the legendLabelGenerator field.
       * @throws CloneNotSupportedException 
       */
      @Test
      public void testCloning_LegendLabelGenerator() 
              throws CloneNotSupportedException {
          StandardPieSectionLabelGenerator generator
                  = new StandardPieSectionLabelGenerator();
          PiePlot p1 = new PiePlot();
          p1.setLegendLabelGenerator(generator);
          PiePlot p2 = (PiePlot) p1.clone();
          assertNotSame(p1, p2);
          assertSame(p1.getClass(), p2.getClass());
          assertEquals(p1, p2);
  
          // change the generator and make sure it only affects p1
          generator.getNumberFormat().setMinimumFractionDigits(2);
          assertFalse(p1.equals(p2));
      }
  
      /**
       * Check cloning of the legendLabelToolTipGenerator field.
       * @throws CloneNotSupportedException 
       */
      @Test
      public void testCloning_LegendLabelToolTipGenerator() 
              throws CloneNotSupportedException {
          StandardPieSectionLabelGenerator generator
                  = new StandardPieSectionLabelGenerator();
          PiePlot p1 = new PiePlot();
          p1.setLegendLabelToolTipGenerator(generator);
          PiePlot p2 = (PiePlot) p1.clone();
          assertNotSame(p1, p2);
          assertSame(p1.getClass(), p2.getClass());
          assertEquals(p1, p2);
  
          // change the generator and make sure it only affects p1
          generator.getNumberFormat().setMinimumFractionDigits(2);
          assertFalse(p1.equals(p2));
      }
  
      /**
       * Check cloning of the legendLabelURLGenerator field.
       * @throws CloneNotSupportedException 
       */
      @Test
      public void testCloning_LegendLabelURLGenerator() 
              throws CloneNotSupportedException {
          CustomPieURLGenerator generator = new CustomPieURLGenerator();
          PiePlot p1 = new PiePlot();
          p1.setLegendLabelURLGenerator(generator);
          PiePlot p2 = (PiePlot) p1.clone();
          assertNotSame(p1, p2);
          assertSame(p1.getClass(), p2.getClass());
          assertEquals(p1, p2);
  
          // check that the URL generator has been cloned
          assertNotSame(p1.getLegendLabelURLGenerator(), 
                  p2.getLegendLabelURLGenerator());
      }
  
      /**
       * Serialize an instance, restore it, and check for equality.
       * @throws IOException
       * @throws ClassNotFoundException  
       */
      @Test
      public void testSerialization() throws IOException, ClassNotFoundException {
          PiePlot p1 = new PiePlot(null);
          ByteArrayOutputStream buffer = new ByteArrayOutputStream();
          ObjectOutput out = new ObjectOutputStream(buffer);
          out.writeObject(p1);
          out.close();
  
          ObjectInput in = new ObjectInputStream(new ByteArrayInputStream(
                  buffer.toByteArray()));
          PiePlot p2 = (PiePlot) in.readObject();
              in.close();
  
          assertEquals(p1, p2);
      }
  
      /**
       * Some checks for the getLegendItems() method.
       */
      @Test
      public void testGetLegendItems() {
          DefaultPieDataset dataset = new DefaultPieDataset();
          dataset.setValue("Item 1", 1.0);
          dataset.setValue("Item 2", 2.0);
          dataset.setValue("Item 3", 0.0);
          dataset.setValue("Item 4", null);
  
          PiePlot plot = new PiePlot(dataset);
          plot.setIgnoreNullValues(false);
          plot.setIgnoreZeroValues(false);
          List<LegendItem> items = plot.getLegendItems();
          assertEquals(4, items.size());
  
          // check that null items are ignored if requested
          plot.setIgnoreNullValues(true);
          items = plot.getLegendItems();
          assertEquals(3, items.size());
  
          // check that zero items are ignored if requested
          plot.setIgnoreZeroValues(true);
          items = plot.getLegendItems();
          assertEquals(2, items.size());
  
          // check that negative items are always ignored
          dataset.setValue("Item 5", -1.0);
          items = plot.getLegendItems();
          assertEquals(2, items.size());
      }
  
      /**
       * Check that the default base section paint is not null, and that you
       * can never set it to null.
       */
      @Test
      public void testGetBaseSectionPaint() {
          PiePlot plot = new PiePlot();
          assertNotNull(plot.getBaseSectionPaint());
  
          try {
              plot.setBaseSectionPaint(null);
              fail("Should have thrown a NullPointerException on null parameter");
          }
          catch (IllegalArgumentException e) {
              assertEquals("Null 'paint' argument.", e.getMessage());
          }
      }
  
      static class NullLegendLabelGenerator implements PieSectionLabelGenerator {
          @Override
          public AttributedString generateAttributedSectionLabel(
                  PieDataset dataset, Comparable key) {
              return null;
          }
          @Override
          public String generateSectionLabel(PieDataset dataset, Comparable key) {
              return null;
          }
      }
  
      /**
       * Draws a pie chart where the label generator returns null.
       */
      @Test
      public void testDrawWithNullLegendLabels() {
          DefaultPieDataset dataset = new DefaultPieDataset();
          dataset.setValue("L1", 12.0);
          dataset.setValue("L2", 11.0);
          JFreeChart chart = ChartFactory.createPieChart("Test", dataset);
          PiePlot plot = (PiePlot) chart.getPlot();
          plot.setLegendLabelGenerator(new NullLegendLabelGenerator());
  
              BufferedImage image = new BufferedImage(200 , 100,
                      BufferedImage.TYPE_INT_RGB);
              Graphics2D g2 = image.createGraphics();
              chart.draw(g2, new Rectangle2D.Double(0, 0, 200, 100), null, null);
              g2.dispose();
  
      }
  
  }
  